<template>
  <div class="bottom-bar">
    <div class="check-content">
      <check-button
        class="check-button"
        :isChecked="isSelectAll"
        @click.native="checkClick"/>
      <span>全选</span>
    </div>

    <div class="total-price">
      合计: {{totalPrice}}
    </div>

    <div class="calculate">
      去结算({{checkLength}})
    </div>
  </div>
</template>

<script>
  import CheckButton from "components/content/checkButton/CheckButton"

  import {mapGetters} from 'vuex'

  export default {
    name: "CartBottomBar",
    components: {
      CheckButton
    },
    computed: {
      ...mapGetters(['cartList']),
      totalPrice() {
        return '￥' + this.$store.state.cartList.filter(item => {
          return item.checked
        }).reduce((preValue, item) => {
          return preValue + item.price * item.count
        }, 0).toFixed(2)
      },
      checkLength() {
        return this.cartList.filter(item => item.checked).length
      },
      isSelectAll() {
        // return ! (this.cartList.filter(item => !item.checked).length)
        if(this.cartList.length === 0) return false
        return ! (this.cartList.filter(item => !item.checked).length)
      }
    },
    methods: {
      checkClick() {
        // if (this.isSelectAll) {
        //   this.cartList.forEach(item => item.checked = false)
        // } else {
        //   this.cartList.forEach(item => item.checked = true)
        // }
        const flag = this.isSelectAll
        this.cartList.forEach(item => item.checked = !flag)
      }
    }
  }
</script>

<style scoped>
  .bottom-bar {
    position: relative;
    display: flex;

    height: 40px;
    line-height: 40px;

    background-color: #eee;

    font-size: 14px;
  }

  .check-content {
    display: flex;
    align-items: center;
    margin-left: 10px;
    width: 60px;
  }

  .check-button {
    width: 20px;
    height: 20px;
    line-height: 20px;
    margin-right: 5px;
  }

  .total-price {
    margin-left: 20px;
    flex: 1;
  }

  .calculate {
    width: 90px;
    background: red;
    color: #ffffff;
    text-align: center;
  }
</style>
